// 这是handler层的基础函数，不必要求规范的方法名格式
package handler

import (
	"strconv"
	"strings"
	"time"

	"github.com/gin-gonic/gin"
	"myschools.me/heritage/heritage-api/model"
)

// 获取当前用户
func currentUser(c *gin.Context) *model.User {
	usr, ok := c.Get("user")
	if !ok {
		return nil
	}
	u, ok := usr.(*model.User)
	if !ok || u == nil || u.ID == "" {
		return nil
	}
	return u
}

func pageAndSize(c *gin.Context) (int, int) {
	page, _ := strconv.Atoi(c.Query("page"))
	size, _ := strconv.Atoi(c.Query("size"))
	if page <= 0 {
		page = 1
	}
	if size <= 0 {
		size = 20
	}
	if size > 200 {
		size = 200
	}
	return page, size
}

func parseDateOnly(s *string) (*time.Time, error) {
	*s = strings.TrimSpace(*s)
	if *s == "" {
		return nil, nil
	}
	t, err := time.ParseInLocation("2006-01-02", *s, time.Local)
	if err != nil {
		return nil, err
	}
	return &t, nil
}